names = ['A','B','C','D','E','F','G','H','I','J']
# print(names[0])
# print(names[1])
# print(names[2])
# print(names[3])
# print(names[4])
# print(names[5])
# print(names[6])
# print(names[7])
# print(names[8])
# print(names[9])
# 练习3.1
print(f"Hello {names[0]}")
# 练习3.2

